%0 Journal Article
%A Koch, Lukas
%A Botsch, Sophia
%A Stubenrauch, Cosima
%T Emulsion templating: Unexpected morphology of monodisperse macroporous polymers
%J Journal of colloid and interface science
%V 582
%@ 0021-9797
%C Amsterdam [u.a.]
%I Elsevier
%M FZJ-2020-04752
%P 834 - 841
%D 2021
%X Hypothesis:	We synthesised monodisperse macroporous polymers via polymerisation of water-in-monomer droplet emulsions and obtained non-spherical pores with layered pore walls. We hypothesise that this morphology is caused by surfactant diffusion and phase separation during polymerisation.Experiments:	We varied the surfactant mass fraction of the emulsions and polymerised the templates with a water-soluble initiator. From the resulting macroporous polymers we determined the shape of the pores and thickness of the layers via scanning election microscopy. The response of the monomer/surfactant mixture to polymerisation was studied by a ternary phase diagram that simulated polymerisation. Findings:The emergence of non-spherical pores with layered pore walls is indeed caused by surfactant diffusion and phase separation. During polymerisation the surfactant molecules diffuse either to the water/monomer interface or deeper into the continuous monomer phase. The first process results in non-spherical pores, while the second process generates layered pore walls.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 32911424
%U <Go to ISI:>//WOS:000600666100006
%R 10.1016/j.jcis.2020.08.106
%U https://juser.fz-juelich.de/record/888190